Why can't I send a short message like 1066 1700 to the number starting with 156?

106 1700 belongs to Tencent's business processing instruction. At present, due to the adjustment of Tencent's business policy, it is temporarily not supported to handle Tencent's membership and other businesses through this SMS instruction, that is, sending SMS is ok, but it is usually not supported to handle business through sending SMS. If you can't send short messages of value-added services like this, it doesn't rule out that your mobile phone has set restrictions on sending short messages of value-added services. For details, please contact Unicom for manual customer service consultation. The actual situation is subject to local policies.

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